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  <title>transform_constraint (constraint_transform.rb)</title>
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  <pre><span class="ruby-comment cmt"># File constraint_transform.rb, line 21</span>
 <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">transform_constraint</span>
        <span class="ruby-identifier">new_connection</span> = <span class="ruby-identifier">create_new_connection</span> 
        <span class="ruby-identifier">constraint_conflict_location</span> = <span class="ruby-identifier">check_conflicting_constraints</span>
        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">constraint_conflict_location</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">!=</span> <span class="ruby-value">0</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-identifier">check_two_primary_keys</span>
                <span class="ruby-identifier">puts</span> (<span class="ruby-node">&quot;You have a constraint conflict between line number #{constraint_conflict_location[0]} and #{constraint_conflict_location[1]}&quot;</span>) 
        <span class="ruby-keyword kw">else</span>   
                <span class="ruby-constant">FasterCSV</span>.<span class="ruby-identifier">foreach</span>(<span class="ruby-value str">&quot;constraint_transform_config.csv&quot;</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">row</span><span class="ruby-operator">|</span>
                        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">row</span>[<span class="ruby-value">0</span>] <span class="ruby-operator">!=</span> <span class="ruby-value str">&quot;usage&quot;</span>
                                <span class="ruby-keyword kw">for</span> <span class="ruby-identifier">field_counter</span> <span class="ruby-keyword kw">in</span> <span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-identifier">row</span>.<span class="ruby-identifier">length</span>
                                        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span>] <span class="ruby-operator">==</span> <span class="ruby-value str">'drop_constraint'</span>
                                                <span class="ruby-identifier">drop_the_constraint</span>(<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">1</span>],<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">2</span>],<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">3</span>],<span class="ruby-identifier">new_connection</span>)
                                        <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span>] <span class="ruby-operator">==</span> <span class="ruby-value str">'create_constraint'</span>
                                                <span class="ruby-identifier">add_the_constraint</span>(<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">1</span>],<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">2</span>],<span class="ruby-identifier">row</span>[<span class="ruby-identifier">field_counter</span><span class="ruby-operator">+</span><span class="ruby-value">3</span>],<span class="ruby-identifier">new_connection</span>) 
                                        <span class="ruby-keyword kw">end</span>        
                                <span class="ruby-keyword kw">end</span> 
                        <span class="ruby-keyword kw">end</span>
                <span class="ruby-keyword kw">end</span>   
        <span class="ruby-keyword kw">end</span>    
 <span class="ruby-keyword kw">end</span></pre>
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